Paraffining-machine.



J. o. THOMPSON.

PARAPPINING MAGHINB. APPLICATION FILEDDT. 26, 1908. A y "95 1 ,293.Patented Mar. 8, 1910.

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J. C. THOMPSON.

PARAF ING MACHINE.

APPLIOAT oN :LED 0012.26.1903.

Patelltfd Mal. 8, 1910. 2 slung-SHEET z.

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UNITED sTATEs PATENT .oEEroE JESSE C. THOMPSON, F LOS ANGELES,CALIFORNIA, ASSIGNOR TO THEv AMERICAN SANITARY PAPER CUP COMPANY, 0F LOSANGELES, CALIFORNIA, A CORPORATION OF ARIZONA TERRITORY.

PARAFFINING-MACHINE.

specification or Letters Patent.

Patented Mar. 8, 1910.

Application filed October 26, 19.08. Serial No. 459,571.

To all whom it 'may concern:

Be it known that I, JESSE a citizen of the United States, residing atLosAngeles, in the county of Los Angeles and State of California, haveinvented new and useful Improvements in Parailining- Machines, of whichthe following is a speciiication.

This invention relates to a lmachine for i coat-ing the inner surfacesofcontainers with paraffin, the object being to render the containerssanitary, and impervious to liquids.

As indicated above, the object ofthe 'invention is to provide a machinewhich will 'paraiiin the containerson the inside alone,

as it is unnecessary to paraiiin the voutside for ordinary purposes. Astacking and counting device is also provided so that the containers maybe delivered in counted lots. In the accompanying drawings z-Figure 1 isa central longitudinal section of the complete machine. Fig'. 2 is avertical cross section taken on line 2-2 of Fig. 1. Fig. 3 is a bottomplan view of one of the container clamps. Fig. 4 is an enlarged planview of the container tray andthe mechanism mounted thereon. Fig. 5 isan enlarged detail of the back side of the container tray.

Referring to the drawings, 5 designates a supporting frame in the upperend of which a parafHn tank 6 is mounted. This tank is provided with asteam jacket 7 paraffin 8 therein in a liquid condition. Above the tanka horizontal frame 9 is supported and two transverse shafts 10 arejournaled thereon. Sprockets 11 are mounted on shafts 10 and a chain 12passes over the sprockets. On ch-ain 12 is mounted a plural-it ofcontainer clamps 13, these clamps eing spaced around the chain at adistance of three links apart. In the drawings only three of the clampsare shown, the positions of the remainder being-indicated by the dot anddash center' lines. These clamps are each composed of two members 14 and15, the separate members being mounted on adjacent links; as shown, sothat they are thrown into a divergent position upon passing over thesprockets.

The present machine is designed for a conical container, one being shownin dotted lines at 16. The containers are dro ped into the machinethrough a chute l? at C. THOMPSON,

- equal to the len l proper intervals so that they fall into the clampin the position shown. Member 15 of the clamp is provided withy a bead18 around its outer' edge and the container top rests below this bead,springs 19 on member .14 pressing the container into engagement withmember 15. IVhen the clamp has turned to its lower' position on itspassage around the sprocket the container is held tightly from fallingout.

The sprocket chain is driven intermittently by a ratchet and pawlmechanism. Mounted in the lower part of the frame is a shaft 20 to whichpower is supplied in any convenient manner. This shaft is provided wit-ha cam 21 Whichoperates a cam follower 22 mounted on a lever 23 pivotedto the frame at 24:. `A link-25 connects lever 23 with a pawl 26 whichengages with a ratchet 27 on shaft 28, the proportions being such thatshaft 28 is moved through a distance corresponding to one ratchet toothupon each movement .of the cam follower and each rotation of shaft 20. Asprocket wheel 29 is mounted on shaft 28 and a chain 30 connects withone of shafts 10, this armovement of chain 12 through a distance h ofthree links upon each rotation of sha 20. Thus the successive containersheld in the clamps are always moved to the same position.

At one end of the paraffin tank a pump cylinder 31 is arranged, aplunger 32 projecting below the tank and being connected to the end oflever 23 as at 33. Upon each movement of the lever the operated, cam 21moving the plunger downwardly and-sprin 34 moving it upwardly whenportion 35 o the cam reaches the cam follower. The plunger is thus givena quick upward movement, and the paralin which has entered the pumpcylinder through 391 and is spra ed into the container directly above.It will be seen that thespraying of the paraffin takes place while thelever is opera-ted by the spring, the containers moving while the leveris operated to draw the pump plunger back to take a fresh charge ofparai'lin. As the operation of parafnlng the successive containers goeson the containers move from their position over the pump to the positionshown at the right of pump plunger is 'ports 36 is forced upwardlythrough nozzle v rangement providing for the intermittent Fig. l wherethey are released and stacked up in counted lots suitable for packing.

Each of springs 19 is provided with a transversely projecting end 40with which a trip-finger 41 is adaptedto engage. The trip gers aremounted on a'stac ing guide 42 secured to the end of the paraffin tank,the fingers being held in the osition shown by springs 43. When the camp with its container comes to a position directly over the stackingguide the trip fingers engage` with the springs and they are held backso that the container is allowed to fall from the clamp. The containersfall through the stacking guide and .the rst one falls on to tray 44with its large end down, this being the open end. The followingcontainers pile up on and over the lower one as is shown in dottedlines. down a space each time a container is placed thereon so that theupper part of the top container is always within the stacking guide,thus holding the pile of containers in an upright position.

Tray 44 is mounted on rods 45 so as to slide vertically, being normallypulled upwardly by two weights 46, shown in dotted lines in Fig. 2. Themechanism to move the tray downwardl comprises an eccentric 47 mountedon shag"Jv 20. A connecting rod 48 is adjustably secured at 49 to alever 50 piv.- oted at 5l, a slot 52 bein provided so that the angularmovement o the lever may be varied. Theother end of the lever isconnected by pin 53 to avertical feed rod 54, this rod bein reciprocatedby the movements of the ever. Mounted on the back of tray 44, as is mostclearly shown in Figs. 4 and 5, is a gripper arm 55, being pivoted at 56to the tray.. This arm binds against one of rods 45 in such a mannerthat the tray cannot be moved upwardly by weights 46. A second gri perarm 57 bears against feed rod 54 so tlhat the tra-y must move downwardlywhenever the feed rod moves downwardly, arm 57 being also'pivoted to thetray at 56. Both of the gripper arms are providedl with extensions 58and a spring pressed pawl 59 presses a ainst the under faces of theseextensions an keeps the grippers in engagement with their respectiverods. A shoulder 60 is provided on the pawl under which the extensionsare adapted to be held when the tray is moved upwardly to its upperinitial position when the previous stack of containers has just beencompleted. By the mechanism just described the tray is moved downwardlyas the containers are placed thereon. After a certain desired number ofcontainers has beeniiled u p the upper part of the top one is sti withinthe stacking guide and it is necessary to move i the whole stackdownwardly to remove it from the machine. This is accomplished by aseparate mechanism which is adjustable to Tray 44 is moved operate afterany desired number of successive downward movements of the tray. Aneccentric 65 is mounted on shaft 20 and is connected by rod 66 to alever 67 pivoted at 68, the other end of the lever being connected to apush rod 69. The center portion of this push rod is pivoted to aconnecting link 70 which is also connected to a controllin lever 71.This controlling lever is pivote at 72 to arm 7 3 which forms anextension of frame 74 slidably and adjustably mounted on vertical rods45. An extension 75 on the controlling lever projects into the path oftray 44 so that the tray must Acontact with it on its downward movement.When the tray engages extension 75 controlling lever 71 is forced towardthe left, a spring 7 6 'normally holdin it in the position shown. Pushrod 69 is t us lmoved to'the left and its upper notched end 77 comesinto contact with pin 78 on lthe rear end of lever 7 9, also pivoted at7 2 to extension 73. The lever is normally held in the position shown byspring 80, the

action of the push rod forcing its forward 4end. 81 downwardly and 'intocontact with the upper partof tray 44. It will be seen that the movementof the end of lever 79 is comparatively large, the movement of cam 65being multiplied in both levers 67 and 79. The tray is therefore pusheddownthrough a large distance, so much that the upper container isremoved entirely from engavement with the stacking guide. Pivotalllymounted at 82 on frame 74 is an ejector arm 83. extending upwardlyalongside tray! 44. This arm is provided with an extension 84 on itslower end with which tray 44 is adapted to contact during the lastportion of its downward movement, the arm being thereby forcedoutwardly. On the upper end of the arm is mounted an adjustable finger85 standing behind the stack of containers and tipping the stack overwhen the ejector arm is moved. End 81 of lever 7 9 comes down on tray 44in the position shown in dotted lines in Fig. 5, coming into contactwith extensions 58- of the gripper arms and forcing them downwardly sothat they are caught and held by pawl 59. When this is done the arms nolonger prevent the tray from moving upwardly and it does so as soon aslever 79 moves to its normal position and releases l it. Upon reachingthe top of the frame spring finger 86 on pawl 59 engages forcibly withstacking guide42 and the awl is removed from engagement with t e gripperarms, the arms vthen resuming their normal functions. Y

I claim 1.. A container coating machine, comprising a .tank for thecoating substance in l1 uid form, a pump arranged within'the tan nearone end thereof and adapted to discharge liquid therefrom upwardly, aconveyer belt wheel mounted on each end of the j tank, an endlessconveyer belt passing over l the Wheels, a plurality of grippers spacedon the belt, each gripper comprising a pair of members secured to thebelt independently i of each other at points removed from each l otherlongitudinally of the belt, and each of the membersl projectingoutwardly from the i belt in its plane of movement, a. chute 4forfeeding containers to the grippers while passing over one of the wheels,means to intermittently move the belt over the tank and pump, and meansto actuate the pump to force liquid during the periods of rest of thebelt. v

2. A container coating machine, comprising a. tank for the coatingsubstance in liquid form, a pump arranged Within the tank i near one endthereof and adapted to discharge liquid therefrom upwardly, a. pair ofwheels mounted on the ends of the tank in a common vertical plane withthe line of discharge of the pum an endless conveyer link belt mountedon e Wheels, a plurality of grippers spaced on the belt, eachgrippercomprising a pair of members mounted on adjacent links of thebelt and projecting from the 4outer face thereof, a chute for oontainerslocated over one of the Wheels, means to intermittently move the belt,and means to actuate the pump to force liquid during the periods of restof the belt.

3. In a container coating macl1ine,.an endless link belt, a. pluralityof container grippers spaced on the belt, each gripper comprisingra pairof opposed members adapted to` receive and hold a container betweenYthem, the members of each gripper being secured to adjacent links of thebelt and projecting from the outer face thereof, a pair of Wheels overwhich the endless belt moves, means for feeding containers to thegrippers while passing over one of the Wheels,

means for holding the containers in the grippersV While passing oversaid Wheel, means to move the belt intermittently, and means to s raythe containers with a coating liquid uring the period of rest of thebelt.

In witness that 1 claim the foregoing I y have hereunto subscribed dayof October 1908.

J. C. THOMPSN.

Witnesses:

JAMES T. Bmw, DAVID E. FRANCIsoo.

my name this 19th A

